A surgical apparatus which includes a handpiece having a passage. The retention assembly includes a pair of radially movable buttons, aligned in axially extending passages in communication with the passage and can engage with and cause rotational movement of a collet member assembly rotatably supported in the passage. The collet assembly includes rolling lock members which can be moved by the collet member from a lock position, in which the lock members are forced by the wall of the passage to extend inwardly of the collet member and an unlocked position, in which the lock members are aligned with a recess in the wall of the passage and are not forced to extend inwardly of the collet member. The surgical apparatus may find particular use with irrigation fluid, suction, and powering of a surgical tool. The passage may include a cutting blade retention assembly integrated in the passage.

Punch holders and corresponding punch configurations configured to increase the ease and speed by which maintenance and/or modification of punches used with the holders can be performed. In some cases, the punch holder can be configured with one or more upper and lower collars operatively situated on differing areas of the holder, with each collar adapted to perform a different action with regard to a punch held by the holder. In some cases, when the upper collar is rotated, a corresponding height adjustment of a punch held by the holder results. In some cases, when the lower collar is rotated, a punch held by the holder is released.

A fixture to hold a workpiece comprising, among other things, a housing having a passage opening into which a clamping pin is inserted for supporting the workpiece; a driving ring mounted in the housing; and at least two locking pins facing the axis of the opening, mounted radially in the housing so as to be able to move, wherein the clamping pin is locked in the opening of the housing when the locking pins are moved toward the axis, and released from the passage opening of the housing when the locking pins are moved away from axis; wherein, a control surface with at least two different pitches is worked onto an inside of the driving ring, and a contact surface is worked onto an inner wall of the driving ring so as to permit movement of the locking pins by rotation of the driving ring.

A locking device has a collar body, a roller cage, multiple rollers, and a clamping set. The collar body has a chamber formed inside the collar body and multiple concave recesses formed in an inner periphery of the collar body. The roller cage is mounted in the chamber. The clamping set has multiple clamping blocks annularly disposed within the roller cage. Each one of the multiple clamping blocks is curved and has multiple second concave recesses formed in an outer peripheral surface of the clamping block. The multiple rollers are rotatably mounted to the roller cage and are respectively received by the multiple first concave recesses and the multiple second concave recesses. Each one of the multiple rollers is rotatable along a corresponding one of the multiple first concave recesses and a corresponding one of the multiple second concave recesses.

A manually actuated end-of-arm tool (EOAT) changer is described. EOAT changer includes an external housing within which an inner cam ring is fixed in place and a rotatable cam ring surrounds the inner cam ring. The inner cam ring defines ball bearing retaining cavities that extend from an exterior of the inner cam ring to an interior; a single ball bearing is at least partially contained in each cavity. The rotatable cam has interior surface which defines bearing engagement teeth. Each tooth is positioned adjacent to one of the ball bearings so as to engage the ball bearing and bias the ball bearing toward the interior of the inner cam ring when the rotatable cam ring is rotated from an open stat to a closed state. A swing arm is engaged to the rotatable cam ring. A yolk is engaged to the external housing and positioned adjacent to the swing arm. When the swing arm is engaged to the yolk the changer is in the closed position.

A locking device has a collar body, a roller cage, multiple rollers, and a clamping set. The collar body has a chamber formed inside the collar body and multiple concave recesses formed in an inner periphery of the collar body. The roller cage is mounted in the chamber. The clamping set has multiple clamping blocks annularly disposed within the roller cage. Each one of the multiple clamping blocks is curved and has multiple second concave recesses formed in an outer peripheral surface of the clamping block. The multiple rollers are rotatably mounted to the roller cage and are respectively received by the multiple first concave recesses and the multiple second concave recesses. Each one of the multiple rollers is rotatable along a corresponding one of the multiple first concave recesses and a corresponding one of the multiple second concave recesses.

A quick-change connecting mechanism and a quick-change screwdriver of the invention. Firstly, a connecting handle and an accommodating cavity are matched in a shaft-hole mode, during actual production and machining, the machining precision of round shafts and round holes is high, the matching and mounting precision of the round shafts and the round holes is much higher than that of hexagonal shafts and hexagonal holes, and thus the axial precision of the connecting handle or screwable tips is ensured after mounting; secondly, longitudinal locking bodies are arranged and longitudinally inserted into locking grooves in an abutting mode under the effect of a sliding sleeve, so that rotation torque is transmitted in the circumferential direction, and the torque of a connecting rod is transmitted to the connecting handle or the screwable tips. Meanwhile, the connecting handle is fixed in the mounting direction and is prevented from falling.

Devices are described relating to the retaining of surgical tools within the chuck of a reciprocating surgical instrument, such as a reciprocating saw. A securing chuck is disclosed for securing a surgical tool to a reciprocating surgical instrument that comprises a shaft and a securing member. The shaft defines an axis and has a cylindrical bore extending along the axis. The bore is shaped to receive a substantially rounded tool shank. A pair of transverse slots extends into the shaft along a plane passing through the axis for receiving a substantially flattened tool shank. The transverse slots intersect with the cylindrical bore. The securing member is carried by the shaft and is radially movable relative to the bore both inwardly and outwardly to secure the surgical tool in the chuck.

In a fixture (1) by means of which a workpiece (2) to be machined is held on a tool table (3) of a machine tool (4), comprising: a housing (10) into which a passage opening (11) is worked, in which a clamping pin (12) is inserted for supporting the workpiece (2) on the housing (10) of the fixture (1), a fastening screw (14) engaging in the passage opening (11) by means of which the housing (10) is fixed onto the tool table (3) in an oriented position, a driving ring (15) mounted in the housing (10) in a rotating arrangement which is in a driving active connection with a driving spindle (20) inserted in the housing (10), by means of which the driving ring (15) can be moved about the longitudinal axis (11) of the passage opening (11) within a specified angle range (), and at least two locking pins (18) facing the longitudinal axis (11) of the passage opening (11), mounted in the housing (10) in such a way as to allow radial movement and each of which is in a driving connection with the driving ring (15), and by means of which the clamping pin (12) is locked in the passage opening (11) of the housing (10) in the clamped condition and/or is released in the initial condition, the conversion of the rotational movement of the driving ring (15) into a radial advance movement for the locking pins (18) used should take place without play and with at least two different ratios.

This is achieved in that a control surface (21) or control cam with at least two different pitches (22, 23) is worked onto the inside (16) of the driving ring (15) in each area of the locking pins (18), that an accommodating pocket (19) with a U-shaped cross section is worked into the corresponding locking pins (18) into which the driving ring (15) engages, and that a contact surface (25) is worked onto or provided on the wall of the locking pin (18) facing the inner wall (16) of the driving ring (15) and the contact surface (25) is in contact with the control surface (21) or control cam of the driving ring (15) and moves the corresponding locking pin (18) radially inwards or outwards depending on the direction of rotation of the driving ring (15).

A rotating log saw clamp for clamping a product roll to be sawn. The rotating log saw clamp includes a first portion disposed for rotation about an axis and a second portion disposed for rotation with the first portion and movable relative to the first portion between an open position and a clamping position. The second portion is rotatable from the clamping position to the open position by relative rotation of the first and second rotating portions.